What Is A Good Heterogeneity?

What Is A Good Heterogeneity? A rough guide to interpretation is as follows: 0% to 40%: might not be important. 30% to 60%: moderate heterogeneity. 50% to 90%: substantial heterogeneity. 75% to 100%: considerable heterogeneity. What causes high heterogeneity? High heterogeneity can also be caused by the fact that there are two or more subgroups